Stability Analysis of Strain-Softening Slope Reinforced with Stabilizing Piles
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 136, Issue 11
Abstract
Stabilizing piles have been used extensively over the past few decades to support unstable slopes. A new simplified method is described to analyze the stability level of a strain-softening slope reinforced with stabilizing piles. An equivalent principle is proposed to account for the three-dimensional effect of the piles on the stability level of slopes. The formulation is derived on the basis of the displacement distribution assumptions of the slope by extending the simplified Bishop slice method. The parameters can be easily determined by element tests. This method is used on a real-world slope to discuss the influential factors. The results show that the slope geometry and pile layout, which includes pile spacing, pile location, and pile depth, have a significant effect on the safety factor and critical slip surface of the reinforced slope. The stability level of a strain-softening slope is dependent not only on the strength parameters but also on the stress-strain relationship of soil.
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Acknowledgments
The study is supported by the National Basic Research Program of China (973 Program) (Grant No. UNSPECIFIED2007CB714108) and the National Natural Science Foundation of China (Grant No. NNSFC50979045).
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 136 • Issue 11 • November 2010
Pages: 1578 - 1582
Copyright
© 2010 ASCE.
History
Received: Apr 16, 2009
Accepted: Apr 11, 2010
Published online: Apr 19, 2010
Published in print: Nov 2010
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